Removal of antibiotic resistance genes during swine manure composting is strongly impaired by high levels of doxycycline residues

Wen, Xin; Chen, Majian; Ma, Baohua; Xu, Jiaojiao; Zhu, Ting; Zou, Yongde; Liao, Xindi; Wang, Yan; Worrich, Anja; Wu, Yinbao

doi:10.1016/j.wasman.2024.01.037

Waste Management

2024

DOI: 10.1016/j.wasman.2024.01.037

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Removal of antibiotic resistance genes during swine manure composting is strongly impaired by high levels of doxycycline residues

Xin Wen,

Majian Chen,

Baohua Ma

et al.

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2024

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Cited by 5 publications

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Bioconversion of organic wastes: treatment sludges, animal manures, and agricultural wastes

Ucaroglu,

Ozbek

2024

Biomass Conv. Bioref.

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This study aimed to investigate the compostability of treatment sludge and to determine the effects of adding different animal manures (cattle, pig, horse, and chicken) and agricultural waste (sunflower stalks) on the composting process. Five different compost reactors (M1, M2, M3, M4, and M5) were operated. Sunflower stalks were added to all reactors as a bulking agent at the rate of 20%. Treatment sludge (80%) and bulking agent were added to the M1 reactor, where animal manure was not added, while 40% treatment sludge and 40% animal manure were added to the other reactors. In the reactors where animal manure was added, cattle (M2), pig (M3), horse (M4), and chicken (M5) manure were used, respectively. The temperature, pH, electrical conductivity, organic matter (OM), carbon to nitrogen ratio (C/N), total Kjeldahl nitrogen, and total phosphorus were monitored during the 21-day process. The highest OM loss (64.8%) occurred in the M2 reactor, and the maximum temperature (62.7 °C) was achieved. The high temperatures reached in the reactor increased microbial activity, resulting in rapid decomposition of OM and elimination of pathogens. With a maximum reduction in the C/N ratio (40%), carbon and nitrogen balance was achieved, thus obtaining a more stable and higher quality compost for plants in this reactor. In the M1 reactor, where only treatment sludge was composted, lower microbiological activity occurred compared to the other mixtures due to the lack of substrate. It can be said that composting treatment sludge together with animal manures will provide higher quality end products.

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Bioconversion of organic wastes: treatment sludges, animal manures, and agricultural wastes

Ucaroglu,

Ozbek

2024

Biomass Conv. Bioref.

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Priority establishment of soil bacteria in rhizosphere limited the spread of tetracycline resistance genes from pig manure to soil-plant systems based on synthetic communities approach

Wen,

Xu,

Worrich

et al. 2024

Environment International

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Ceftiofur in swine manure contributes to reducing pathogens and antibiotic resistance genes during composting

Ma,

An,

et al. 2024

Environmental Research

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Removal of antibiotic resistance genes during swine manure composting is strongly impaired by high levels of doxycycline residues

Cited by 5 publications

References 51 publications

Bioconversion of organic wastes: treatment sludges, animal manures, and agricultural wastes

Bioconversion of organic wastes: treatment sludges, animal manures, and agricultural wastes

Priority establishment of soil bacteria in rhizosphere limited the spread of tetracycline resistance genes from pig manure to soil-plant systems based on synthetic communities approach

Ceftiofur in swine manure contributes to reducing pathogens and antibiotic resistance genes during composting

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